I've noticed that for factions that start delegated, there is no way for me to undelegate them. I click the button in the palace for each category and it appears to toggle, but I can never control the troops. I don't know if this is specific to Raider nations as those are the ones usually started with delegation toggled or not but even when the military starts undelegated for raider nations, I can't control the military. Is this intended or is it a bug?
I was playing a scenario where I controlled the Alans and the Persians but since I never had true control over the Alan (they had the delegation bug), they kept raiding my persians knocking down their VPs. Very annoying though I realize Alan get victory points for pillaging too.